misc pkgs: Manual fixup pkgconfig nativeBuildInputs after sed

Importantly, this included regenerating pkgs/servers/x11/xorg, to
clobber the old sed.

pkgs/applications/networking/linssid/default.nix

@@ -9,8 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "13d35rlcjncd8lx3khkgn9x8is2xjd5fp6ns5xsn3w6l4xj9b4gl";
   };
 
-  nativeBuildInputs = [ qmake ];
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkgconfig qmake ];
   buildInputs = [ qtbase qtsvg boost qwt6 ];
 
   patches = [ ./0001-unbundled-qwt.patch ];